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SYSTEM AND METHOD FOR BOOSTING TORQUE OUTPUT OF A DRIVE TRAIN

  • US 20080064558A1
  • Filed: 02/07/2007
  • Published: 03/13/2008
  • Est. Priority Date: 09/08/2006
  • Status: Active Grant
First Claim
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1. A method for boosting a torque output of a drive train, the method comprising:

  • detecting an engine speed of an engine having a baseline torque versus engine speed curve;

    determining if the detected engine speed is within a first speed range of engine speeds; and

    activating an electric motor to rotate substantially synchronously with the detected engine speed within the first speed range in an electric propulsion mode in accordance with a supplemental torque versus engine speed curve if the detected engine speed is within the first speed range, the supplemental torque versus engine speed curve intercepting the baseline torque versus engine speed curve at a first lower speed point and a first higher speed point.

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